enigma-bbs/core/mime_util.js

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/* jslint node: true */
'use strict';
// deps
const _ = require('lodash');
const mimeTypes = require('mime-types');
exports.startup = startup;
exports.resolveMimeType = resolveMimeType;
function startup(cb) {
//
// Add in types (not yet) supported by mime-db -- and therefor, mime-types
//
const ADDITIONAL_EXT_MIMETYPES = {
ans: 'text/x-ansi',
gz: 'application/gzip', // not in mime-types 2.1.15 :(
lzx: 'application/x-lzx', // :TODO: submit to mime-types
};
_.forEach(ADDITIONAL_EXT_MIMETYPES, (mimeType, ext) => {
// don't override any entries
if (!_.isString(mimeTypes.types[ext])) {
mimeTypes[ext] = mimeType;
}
if (!mimeTypes.extensions[mimeType]) {
mimeTypes.extensions[mimeType] = [ext];
}
});
return cb(null);
}
function resolveMimeType(query) {
if (mimeTypes.extensions[query]) {
return query; // already a mime-type
}
return mimeTypes.lookup(query) || undefined; // lookup() returns false; we want undefined
}